Centrifugal machine



W. E. BOCK CENTRIFUGAL MACHINE I May 29, 1928.

Original Filed Aug. 24, 1923 2 Sheets-Sheet l a i M 5\ 00000 ooooo ooooo lw 00000 000 00 .n F 00000 x fl 9 I Z 00000 M 00000 ooooo 0000 I ooooo ooooo if I May 29, 1928.

w. E. BOCK CENTRIFUGAL MACHINE Original Filed Aug. 24, 1923 Fig. 2,

2 Sheets-Sheet 2 Patented May 29, 1928 UNITED sre'rss rarest o aries,

WILLIAM EMILIBOCK, OF EAGLE POINT COLONY, OH IO, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO THE BOOK LAUNDRY MACHINE COMPANY, OF TOLEDO, 01-110,. A COR- PORATION OF OHIO.

CENTRIFUGAL MACHINE.

Original application filed August 24, 1923, Serial No. 659,120. Divided and this application filed April 24,

' i 1925. Serial No. 25,570.

This invention relates more particularly to centrifugal machines of the type adapted for the extraction of liquid from material or matter containing the same.

An object of the invention is the provision, in connection with a high speed rotatable driven member and a manual power control therefor, of simple, novel and highly efiicient means which is automatically operable by a movement of the control to "oif position to effect a braking or stopping of the rotation of the driven member.

-The invention is fully described in the following specification, and while it is capable of embodiment in numerous forms, one embodiment only thereof is illustrated in the accompanying drawings, in which,

Figure l is a central vertical sectional view of a centrifugal machine embodying the invention, with the on position of the control means sliown in full lines, and Fig.- 2 is a cross-section of the machine on the line 22 in Fig. 1.

This application is a division of my copending application Serial No. 659,120, filed August 24th, 1923.

Referring to the drawings, 1 designates a pedestal or base comprising, in the present instance, a ring-like top portion 2 and a plurality of supporting legs 3. An electric motor 5 is mounted in the pedestal 1 for yielding universal rocking movements relative thereto, with its rotor axis normally vertically disposed. The motor frame 6, which carries the field 7, has its top preferably open or devoid of the customary shaft bearing and has at its under side a frame-part 8, which is secured at several points around the same to the frame 6 by bolts 9. The frame-part 8 forms an oil chamber 10 therein and has a sleeve 11 extending upward therefrom through the frame 6 axially thereof, preferably to a point' above the same. or spindle 12 is journaled at its lower end portion in the sleeve bearing 11 with its An upright shaftjects a distance above the motor and carries at its upper end a container 1.5 for universal rocking movements relative thereto.

Therotor 16 of the motor is mounted for free rotation within thefield 7 around the sleeve 13 concentric therewith, and has at its upper end a head 17, which is mounted around the shaft 12 andrigidly pinned or so othprwise secured thereto for rotation therewlt l.

To permit the motor 5, its shaft 12 and the container 15 to have universal rocking movei'nents, the motor frame 6 is mounted (:5 ma ring-like frame member 20 for yielding rocking movements in one plane, and this frame member is mounted in the pedestal ring 2 for yielding rocking movements in a Y plane at right angles to the plane of rocking of the motor frame in the member 20. The details of this mounting need not be more specifically described.

An enclosing shell or casing 25 is provided for the operating parts of the appa-" ratus. The shell is open at'its lower end and has its upper end closed by a cover 26 to permit access to the container 15.

An electric control switch 27 for the motor is mounted within the. casing 25 at one side thereof, and is operated to close the motor circuit by the downward rocking of an arm 28, which is carried by a rock shaft 29. This shaft extends crosswise of the casing 25 above the motor 5, being journaled 5 at its ends in suitable bearings provided in the respective sides of the casing 25. A control lever 30 projects transversely from the forward end of the shaft 29 at the outer side of the casing 25 and operates in a slotted guide 31 secured to the casing. The slot of this guide is preferably offset at' each'end to provide seats in which the lever 30 rests when at either limit of its throw, whichmay be designated as the on and off positions of the switch. The lever 30 has a sufficient spring action to normally seat in either ofiset portionof theguide' slot so! as to require a slight lateral pressure to move it from seated position,

The head 17 which is fixed to the shaft 12 is provided at its upper end with a brake-,- disk 32 disposed in concentric relation to the shaft and adapted to be engaged by a of a U-shaped carrying yoke 34, the legs of? which straddle the head 17 and have their free end portions turned back under themselves and fixedly mounted on a cross-bracket 35, which extends over the motor 5 and is mounted at its ends on the pedestal frame 2.

The yoke 34, due to its manner of mounting, constitutes a spring support for the brake member 33 and tends to hold the brake member lowered from braking engagement with the brake disk 32.

A tongue 36 projects outward from the closed end of the'yoke 34 and is connected by a coiled contractile spring 37 to an offset or crank portion 38 of the shaft 29. The connection between the yoke and shaft and the position of the crank 38 with respect to the shaft axis are such that when the control lever and shaft 29 are thrown to the off position indicated by the dotted lines in Fig. 1, the brake member, 33 will be drawn up into braking co-action with the disk 32, thereby acting to quickly stop the rotation of the drlven parts. With the construction of brake shown it is apparent that the brake member 33, its mounting and operating means are permanently under tension even when the former is not thrown into braking engagement with the disk 32, thereby avoiding loosel connected arts and the conseuent liability of noise lncident to the vibratlon thereof when the machine is running at speed. This is an important feature in the machines of this class.

I wish it understood that my invention is 'not limited ,to any specific construction,

arrangement or form of the parts, as it is capable of various modifications without departing from the spirit of the claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. In combination, a driven shaft, means for driving the shaft, a control means for said drive means including a rock shaft disposed transversely of the driven shaft, a

. normally released brake means for the drive shaft, and means yieldingly connecting the rock shaft and operable to apply braking movements to the brake means when the control means is moved to off position. 1

2. In combination, a rotatable driven means, a control means for the driven means, a brake means for the driven means having a spring brake arm normally standing in disengaged position, and means connecting the spring arm of the brake means and the control means to cause an engagement of the brake means when the control means is moved to off position.

3. In combination, a rotatable driven means, a brake disk rotatable therewith, a

stationary part, a spring brake member carried by said stationary part and constantly under tension to prevent rattling, and a control member for the driven means connected to said brake member and operable to move the member into braking coaction with said disk when a control means is moved'to off position.

4.111 combination, a rotatable driven member when the control means is moved.

to off position. v p

In testimony whereof, I have hereunto signed my name to this specification.

WILLIAM EMIL won 

